Game Mechanics A Potential Way to implement questlines

Questlines sound great until you have to play them again a second time (apparently). Now every quest is locked behind like 6 others. We don't want every quest to become ToL.

So, do what TBP did. You need to do 7 quests to start TBP, but when you complete the quest and unlock TCC, you never need to do TBP again (it gives an item that allows you to open TCC).

So how could this be implemented in a main storyline? Well, you would have a mechanic where, after you beat these quests on 1 class, you don't need to complete them again to do the next ones. I would assume that this would not be non-consumable quest items you get on your first completion because people like bank slots. However, it could likely be implemented. Just a boolean statement or smth saying ("completed quest x").

Let me know if this solves this problem well.

 

I was also thinking that it could be used to make more questlines rather than one off quests (it is better for worldbuilding and story). For example, ancient nemract and Charon: How did such a powerful entity just appear one day? Why did he only destroy ancient nemract before doing nothing for 1000 years? How can you, a lv 27 adventuring defeat something that could destroy an entire city? Stating "well technology has come a long way in a thousand years" is very unsatisfying. The only way to fix this (and thus turn charon into an actual character rather than a bbeg) is to give him quests (sorry, we can't do more wynn plains discoveries there's like 17 already, add some more to gavel or smth). But, all but 2 dungeons only require one quest (and those two are lore important and endgame already so they don't really count). I think there should be 3 quests for charon (a reworked version of pit of the dead, dark descent, and a rework of lost tower). By him posing as an important figure in multiple quests, he becomes much more interesting. Also, the dungeon would need some reworks but that's a discussion for another time.

By giving the player an item like "Medallion of the Dead", they could bypass this 3 part questline (or maybe only have to do dark descent idk).

This is just one of the many ways you could implement this.

What if you had "general" main questline that followed important quests (like dungeon quests or heroic feats) and then had mini-main questlines, like the 3-part charon one I just described (working on ideas for that rn)? It would allow the player's actions to feel more meaningful throughout their entire journey, rather than just "wynnex, RoL, TCC, and SE"."